1. Heat a small saucepan over medium heat. Add sugar and water; bring to a boil. Reduce heat to low; add allspice, cinnamon, and ginger. Simmer until sugar is dissolved (about 5 minutes); remove pan from heat.
2. Add 2 tablespoons spiced syrup to each of 8 cups of coffee; stir to combine. Add 1 tablespoon amaretto to each cup; top with a dollop of whipped cream. Sprinkle with cinnamon; serve.